Stove



-(No Model.)

, G. W. EMERSON.

STOVE.

No. 395,430. Patented Jan. 1, 1889 Qwitwaooao,

gnpher, Wnshinglon, D. c.

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CHARLES \V. EMERSON, OF SOMERVILLE, MASSACHUSETTS.

STOVE.

SPECIFICATION forming part of Letters Patent 1 1"o.395,430, datedJanuary 1, 1889.

Application filed January 28, 1888. Serial No, 262,207. (No model.)

To aZZ whom it may concern.-

Be it known that 1, CHARLES W. EMERSON, of Somerville, county ofMiddlesex, in the State of Massachusetts, a citizen of the UnitedStates, have invented certain new and useful Improvements in Stoves, ofwhich the following is a specification, reference being had to theaccompanying drawings, in which Figure 1. represents a verticaltransverse sectionof astove, shown to illustrate the principles of myinventiomwhich are applicable to furnaces and all other kinds of heatingapparatus, whether hot air alone or hot air and steam combined, as wellas to portable or stationary boilers or locomotives, or any other kindof apparatus in which it is advantageous to generate high heats. Figs. 2and 3 represent vertical transverse sections of different forms ofconstruction of the air-heating chamber,va ryin g from the form shown inFig. 1, but all operating upon the same principle.

My invention reh s generally to that class or subdivision of stoves orheating apparatus commonly known as ventilating, and more especially tothose which bya' tine s stem take in adjacent to the floor the foul andvitiated air of a room or building, heat it in the stove or apparatus,and discharge it hot into the combustion chamber, where it commingleswith the gases which are disintegrated from the fuel, and chemicallycombines with, unilies, and consumes all of the gases, and which stovesor apparatus, simultaneously with such withdrawal of foul air from aroom also take into themselves fresh atmospheric air from out of doors,heat it, and then discharge it into the room or rooms, such input ofpure air equalizing the withdrawal of foul air.

My object is to produce an improved stove or heating apparatus of thatclass; and myinvention consists in the several novel features ofconstruction and operation which are hereinafter described, and whichare specifically set forth in the claim hereunto annexed. It isconstructed as follows:

In the drawings I show only a stove as illustrating the principle of myinvention, not deeming it necessary to illustrate all of the kinds offurnaces and heating apparatus, as well as, boilersstationary, portable,or locomotiveto which this principle or a part of it can be applied.

A is the stove, in which 1 is the outer casing, perforated at oradjacent to the top, as at 2. 3 is the ash-pit; 4, the fire-pot; 5, thecombustion-chamber; and 6 is the reverse fluechamber in the base belowthe fire-pot, and, as these parts are all of ordinary construction, I donot describe them in detail.

B is the foul-air flue extending upward from below the base of thestove, between the firc pot and combustion-chamber wall 7 and the casing1, opening at its upper end into the heating-chamber G, into which itmay extend, as shown in the drawings, which conducts the foul air fromtheroom into this heating-chamber. This chamber consists of a hollow boxwholly constructed of fire-brick, or having its lower face offire-brick, and also the whole or part of its sides and the top, andperhaps a part of its sides of metal or any other material desired. Thebottom or lower face, 8, may be flat, as shown in Fig. 1, or concave, asshown in Fig. 2, or with an angular face, as shown in Fig. 3, in all ofwhich forms the face 8 is perforated, as shown. This chamber is insertedinto the stove above the combustionchamber 5, forming the whole or partof the top thereof, and is supported in its position by any ordinarymeans, the walls of the combustion-chamber being carried up to or uparound the heating-chamber, in which case the top of these walls may beclosed by the heatingchamber or by a perforated diaphragm, 9. The foulair taken into this chamber C is heated therein and is thence dischargedthrough the perforations downward into the combustion-chamber, meetingthe gases of the fuel, combining with and unifying, so that all of thegases and the oxygen in this air are consumed, the hottest blaze beingadjacent to the face 8, which operates as a deflectingplate, while thechamber 0 is raised to a very high temperature, and the upward radiationof heat therefrom heats the top of the stove very hot.

The products of combustion, when the damper 10 is closed, (shown indotted lines,) closing the direct draft, pass from thecombustion-chamber into the downward fine 11, down into the chamber 6below the ash-pit, and thence pass out into the smoke-pipe 12, (shown indotted lines at the back of the stove.) Simultaneous with thiswithdrawal of foul air from the room the pipe and flue D are takingatmospheric air from out of doors, conducting it into the upper part ofthe stove around. the top of the heatingchamber C, where it is heatedand passes out into the room through the perforations 2.

The arrows indicate the courses of the output of foul air from the roomand through the stove and of the input of fresh air into the stove andthrough it into the room.

It will be observed that the upper end of the outputtlue B extends intoand nearly across the heating-chamber (l, which increases the heatingcapacity of the chamber, and also this E extension operates toeffectually prevent any reversal of the current through the flue B,which would otherwise carry all. of the gases and products of combustion(or nearly all of them) from the combustion-chamber out into the room.

hat I claim as my invention, and desire to secure by Letters Patent, is-

A stove consisting of an ash-pit and reverse flue-chamber in the base, agrate, a fire-pot, a combustion chamber, a heating chamber above thecombustion-ehamber, provided with a perforated bottom, and a .tlueleading from the heating-chamber down through the base, afiue leadingfrom the coinbustion-chamber down into the base and connected therefromto the smoke-pipe, an air-inlet flue leading upward through the base andexterior to the firepot and combustion chamber, but heated therefrom,into the upper part of the stove, and a casing inclosing all of theseparts and perforated, substantially as described.

In witness whereof I have hereunto set my hand this Qlth day of January,1888.

CHARLES W. EMERSON.

In presence of- H. P. DENISON, G. W. SMITH.

